The size of the digital divide may have been overestimated, according to the International Telecommunication Union's (ITU) development report for 2003. "A close link exists between the digital and statistical divide", says Michael Minges, head of the ITU's Market, Economics and Finance Unit and lead author of the report. According to the report, while some developed nations are comfortable conducting information society measurement - tracking factors such as infrastructure, access and usage - many developing nations are struggling to produce even basic indicators. "The number of Internet users in most developing countries is usually based purely on government guesstimates or vague estimates", says ITU telecom analyst Vanessa Gray, co-author of the report.